Locking device



Jam 3l, 1928. 1,657,621

w. G. HADSALL LOCKING DEVICE Filed April 28. 1926 2 Sheets-Sheet 1 119.3 Jigl.

INVENTR.'

A TTORNE Y.

@smania Jan. 31, 1928. 1,657,621

w. G. HADsALL Locxms nEvrcE Filed April 28'. 192e 2 sheets-sneer 2 A TTORNE Y.

Patented Jan. 3.1, 1928.

WALTER G. HADSALL, F DETROIT, MICHIGAN.

LOCKING DEVICE.

`Application. led April 28, 1926. Serial No. 105,105.

This invention relates to improvements in locking devices, and refers more particularly to locking devices adapted, when in locked position, to prevent rotation of one member around a second member which passes through the device.

It is, among other things, an object of this invention to provide a locking device that may be applied to prevent the removal of a 1o nut from a bolt which passes through a wheel and rim lug thereby holding the rim in position, by anyone who does not possess a key.

' At the present time the theft of rims and tires is an altogether too common practice,

and this invention aims to provide a simple and effective means of stopping these thefts.

Another object of the invention is to provide a locking device wherein thelatch is, when in locked position on a nut or bolthead, entirely enclosed, so that there is no danger of its being forced back into unlocked position by direct leverage. Moreover the arrangement of the. latch on the operating mechanism is such that even-.if the nut or bolthead were removed downward pressure on the latch could not move it without first breaking the mechanism.

A further object of the invention is to provide a locking device whichl can be cheaply manufactured, and quickly and easily applied to any existing type of wheel and rim without any alteration being made to those parts.

Having. thus briey outlined the major purposes of the invention I will now proceed to describe the preferred embodiment thereof, as applied either to an ordinary wooden wheel and rim lug, or to a disc p Wheel and rim lug, with the aid of the accompanying drawings. In the'drawings: Y Figure 1 illustrates the invention as applied to an ordinary wooden wheel and rim lug, and so positioned on the wheel as to be nearly opposite the valve stem.

Figure 2 is a section on the line 2-2 of Figure 1.

Figure looking at lug bears.

Figure Figure 2.

igure 5 is a section on the line 5-5 of Figure 4. Figures 6 and 7 are sections on the lines 6-6 and 7-17 of Figure 2,

3 is a view of thel locking device the side against whichfthe rim 4 is a section on the line 4-4 of Figure 8 is a view showing the applicapion of the invention to a disc wheel and rim Figure 9 yis a section on the line 9--9 of Figure 8, and Figure 10 is a section on the line 10-10 of Figure 9.

Referring to Figures 1, 2 and 6, 1 designates an ordinary wooden wheel, 2 a rim, 3 a rim lug, and 4 a bolt to hold the lug in position. In Figures 8 and 9, 1a designates a disc wheel having a rim 2a thereon, 3a is a lug usually integral with the rim, and 4a is a bolt by which the rim lug and wheel are secured one to the other. f

5 and 5 respectively indicate two forms of lock casing which are similar except for variations in contour on the surface 24 which is intended to bear against the lug 3 or 3a.

* In the casing is a cylindrical opening 6 having a plug 7 therein which is held against axial movement by a locating pin 8 which engages a slot 9 in the periphery of the plug. i

This slot extends preferably around substantially one halfthe circumference of the plug, so that the pin 8 also limits its rotary movement. In'the side of the casing and radial with the cylindrical opening tumbler extensions 10 are provided, the ends of which are held in contact with the tumbler pins l1 in. the plug by springs 12. 13 indicates plugs driven into the casing after the tumbler pins, tumbler" extensions, and springs have been placed in position. The plug 7 is also provided with a key slot 14 for a key 15. 13a is a plug to hold the locating pin 8.

In the recess 16 in the casing, and at right angles to the/cylindrical opening 6, a latch 17 is arranged across the lower end of which is a transverse groove 18. The end of the plug 7 has an eccentric projection 19 thereon which engages t-his groove so that as the plug is turned the latch is moved up or down in its recess. 'Moreover it will also be noted that the projection is so positioned with regard to the slot 9 that the limits of the turning movement of the plug are reachedwhen the projection is at substantiallyits highest vand lowest points. 16L indicates another plug by which the end of the recess is usually closed after the latch 17 has been inserted.

Through the casing a circular hole 20 is provided for the passage of the bolt 4 or 4a. This hole is of Vsuiiicient size to permit the smaller head 22 of the nut 23 rotating there" 11- It will be noted that the axis of the belt plug the end of the cylindrical opening is` is at ri ht angles to the direction of movement 01g the latch 17, and that the latter, when in raised position, projects into the side of the hole in such a manner as to form a stop for one of the flats of the head 22 of the nut 23 to prevent the latter from turning. The surface 24 of the easing is so shaped intermediately of its vertical sides 25 as to form a bearing surface for the rim lug 3, or 3.

The bolt 4, when in positionthrough the wheel, is prevented from turning by the square 31 contiguous to the bolt head and integral therewith which engages a corresponding recess in the wheel. 'I`h ough ob viously in different forms of wheels Various known methods of holding the .bolt against rotation are employed. For instance in the case of the bolt 4 the latter is so positioned with regard to the flange 2h ofthe wheel rim 2a that the latterprevents the bolt from turning. The rim lug 3, or 3, and the locking device are placed on the bolt and the nut 23-is tightened until one of the flats of vthe head 22 is parallel with the direction of travel of the latch 17. The key l5 is then inserted in Vits slot 14 in the plug and the latter turned thereby raising the latch into locked position. The nut is then positively held against rotation until the latch has been lowered.

In order to simplify the setting of .the

nut I generally make the flats on theSouter portion of the nut parallel with the flats on the'head 22.

After the key has been removed froml the covered by any desired form of closure member 26 to exclude the dust and dirt.

I prefer to case harden the exposed portion of the nut 23 so` that it will not get out of shape particularly when attempts are made to tamper with it. Though when it is left soft it is practically impossible to remove the rim from the wheel when the device is locked, because the head 22 integral with the nut is within the circular opening '20 where it wouldercquire considerable time and effort to cut that portion ofthe nut away even after the outer head had been severed.

In both Figures l and 8 the locking device is shown almost opposite the valve stem 35, for-it is found that when locked in that position it is practically impossible to remove the rim without ruining the tire, so the use of one such locking device affords ample protection for each rim and tire.-

While in the foregoing the invention has been described and shown a plied to a tire and rim, it is however understood that it may be put to many other varied uses. Moreover the construction herein described is subject to such modiiications and alterations as fall within the scope ci the appended claims.

What. I claim as my invention and desire tosecure by Letters Patent is:

1. In a locking device, the combination of a casing having an opening therethrough, a member having an opening therethrough bearing against one surface of a bolt through both ofsaid openings, a nut having a smaller multi-sided head integral therewith in threaded engagement with said bolt, said smaller head being adapted to turn in said opening in said casing, a latch slidable in said casing adapted to bear against said smaller head and prevent rotation of said nut, and means for moving said latch.

2. In a locking device, the combination of a casing having a larger opening therethrough, a member having a smaller opening therethrough bearing against said casing, a bolt through both of said openings, a nut larger than the opening in said casing having ya smaller multi-sided head integral therewith, said nut being in threaded engagement with said bolt, said smaller multisided head being adapted to turn in the opening in said casing, .a latch adapted to slide in said casing transversely ofy said opening and to engage one of'the :Hats yon said multi-sided head and hold it against rotation, means for moving said latch and for positively holding said latch against movement.

3. In a wheel rim lock, the combination with a rim lug having a hole therethrough and an offset end, of a casing so shaped as to bear against said lug and said offset portion, said casing having an opening therethrough registering with said rim lug hole, a bolt passing through said hole and said opening, a nut having a multi-sided head adapted to rotate in said casing and in threaded engagement with said bolt, and a -latch slidable in said casing and adapted to hold said nut against rotation.

4. In a wheel rim lock, the combination with a rimlug having a hole therethrough and an inner offset end, of a casing so shaped as to bear against said lug and said offset end, said casing having an opening therethrough rcgistering with said rim lug hole. a bolt passing through said hole and said opening. a nut in threaded engagement with said Vbolt .and having a multi-sided head Aadapted to rotate in said casing, a latch slidable in said easing and adapted to hold said nut against rotation, said latch having a transverse groove therein, a plug in said casing having a keyslot therein, and an eccentric pin on one end of said plug taking into said latch groove so that said latch is moved by the rotation of said plu WALTER HADSALL.

said casing,

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